The clinical implications of antitumor immunity in head and neck cancer.

Recent developments have renewed interest in understanding the interaction between transformed cells and the immune system in the tumor microenvironment. Here, we provide a comprehensive review addressing the basics of tumor immunology in relation to head and neck cancer and the cellular components potentially involved in antitumor immune responses. In addition, we describe the mechanisms by which head and neck cancer cells escape immune-mediated killing and progress to form clinically significant disease. Further, we detail what effects standard anticancer therapies may have on antitumor immune responses and how these responses may be altered by current and investigational immunotherapies. Finally, we discuss future directions that need to be considered in the development of new immunotherapeutics designed to durably alter the immune response in favor of the host.